FeaturesUnitized shallow, low profile recessed housing is die formed of code gauge prime cold rolled steel with full length stiffeners and unibody endplate for added strengthBallast cover is easily removed without toolsDie formed captive lampholder bracket fully encloses lampholder wiring for easy lampholder replacementAmple knockouts are provided for continuous row wiringBuilt in grid lock feature for safety and convenienceBallasts are CBM/ETL, CEE listed class "P" and are positively secured by mounting boltsRotor lock lampholdersMulti-stage, iron phosphate pretreatment ensures maximum bonding and rust inhibitorPositive spring loaded steel latches and safety lock T-hinges provide secure, high quality door fit and allow hinging and latching from either sideLighting grade baked white enamel finish with premium reflectance for high efficiencyOptimized for T8 lamps